Vinyl 音の始源を求めて①　「電子音楽室」（1955-1968）W/LP

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「音の始源を求めて」　１
電子音楽室 1955-1968
The Beginnings of Japanese Electroacoustic Vol.1
Electronic Music Room 1955-1968
Disc 1
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Side A
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1. 素数の比系列による正弦波の音楽 黛 敏郎
“Music for Sine Wave by Proportion of Prime Number”　Toshiro Mayuzumi　1955　

The pitch, intensity, and duration were calculated from the prime ratio, and were produced using sine wave, saw tooth wave, square wave (short wave), and white noise generator. For the idea, the ratio of prime numbers was selected which is based on the partial sound composition with reference to “Study 1” by Stockhausen.

2.7のヴァリエーション 黛 敏郎、諸井 誠　“Variations on Numerical Principle of 7”
Toshiro Mayuzumi & Makoto Moroi 1956

The tone rows that was gotten the idea from the tone rows method of the twelve- tone technic and that did not include harmonic overtones (49√7n × 70, 70Hz-10015Hz) was used. This tone rows are mainly applied to pure tone, short wave, and saw tooth wave, and white noise is band-cut by the octave filter, and this combination forms a kind of scale. The sequence was also applied to frequency selection configurations, counterpoints, strengths, envelopes, and time elements.

3.ヴァリエテ（第１部分） 諸井 誠 “Variété” Makoto Moroi　1962　

Denying mathematical sound sequence, the Chance Operation method was used, with the appearance rate of pitch, strength, rhythm, and duration being uncertain and randomly distributed using cards, random numbers, etc. It is said that there are limitations to this method’s technique because tapes are edited by hand, with respect to the rhythm, the duration and the level distribution.
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Side B
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1.ホワイトノイズによるイコン 湯浅譲二
“<ICON> on the source of White Noise” Joji Yuasa 1967　

These two works use the original variable frequency filter. Two types of experiments had been done using a tool called a filter to cut out sound from a large volume of white noise.

2.フォノジェーヌ 高橋悠治　“Phonogene” Yuji Takahashi 1961　9’33”

A work for chamber music by electronic sound and 12 players. The two appear to overlap or alternate little by little, but the probabilistic method emphasizes unpredictable results.

3.オリンピック・カンパノロジー 黛 敏郎 “Olympic Campanology” Toshiro Mayuzumi 1964　

This work, which was composed based on the sound of the temple bell, was created for the opening ceremony of the 1964 Tokyo Olympics and for the admission of the Emperor. The basic theory is that the element that determines the tone of the temple bell is determined during the transit period of the moment the temple bell is struck.

Disc 2
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Side C
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1. トランジェント ‘64 松平頼暁“Transient ‘64” Yoriaki Matsudaira　1964　

This work was produced using so-called transient sounds, such as the transient oscillation sound that occurs when the 6-channel sine wave oscillator is turned on and the vacuum tube is heated, and the sound when the sine wave cluster is instantaneously applied to a damaged speaker.

2.空、馬そして死 武満 徹 “Sky, Horse and Death” Toru Takemitsu　1958　

In 1957 NHK Shuntaro Tanigawa made the music for the radio drama "A Man’s Death" (Billy the Kid’s story) in a music concrete, and the next 58 years, this was called "Sky, Horse and Death" Restructured. Although it is a short work of about 3 minutes and 20 seconds, the “sky” that symbolizes nature, the “horse” that reflects the youthfulness of the hero and the mood of the western United States, and the “death” that expresses a sense of emptiness are beautiful.

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Side D
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1.マルチ・ピアノのための「カンパノロジー」 黛 敏郎
“Campanology for Multi-Piano Solo” Toshiro Mayuzumi　1966　

This work is based on the idea of using a piano instead of a real bell sound to make a campanology with an electronic bell sound. In addition, in order to remove the reverberation sound of the entire instrument from the piano sound, “Multi Strings Pickup” device was developed so that it converts string vibrations directly into electrical signals. It directly modulated the piano sound and played the campanology in real time.


2.電子音のためのインプロヴィゼーション 柴田南雄
“Improvisation for the Electronic Sound” Minao Shibata　1967　

This work expresses an unnatural and unstable sound sensation by using tones composed of low frequencies that do not exist physically (sounds of low frequency composition such as 1/2, 1/3, 1/4, etc. in respect to the fundamental wave.)

3.パラレル・ミュージック　一柳 慧　“Parallel Music” Toshi Ichiyanagi　1962　

This is a chance-operation work that was made by tuning in and out freely in layers the sounds of musical instruments, environmental noises, human voices, electronic sounds, and other sounds that just come in parallel.

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